Which ingredient benefits from a dry shake to achieve foam?

Which ingredient benefits from a dry shake to achieve foam?

• A. Ice
• B. Egg white
• C. Lemon juice
• D. Water

Answer: (B)

Egg white is the component that benefits from a dry shake. Its proteins, when vigorously agitated, unfold and trap air to form a stable foam. Shaking without ice allows these proteins to aerate freely without being cooled or diluted, building a strong, velvety foam. After this dry shake, you add ice and shake again (a wet shake) to chill and properly dilute the drink while the foam remains on top. Ice would chill and dilute the mixture during foam formation, which can weaken or collapse the foam. Lemon juice is acidic and can destabilize or coagulate the proteins, harming the foam rather than helping it. Water doesn’t foam at all; it merely dilutes the mixture. Egg white uniquely provides the protein structure needed for foaming, and the dry shake is the technique that maximizes that foam.

Egg white is the component that benefits from a dry shake. Its proteins, when vigorously agitated, unfold and trap air to form a stable foam. Shaking without ice allows these proteins to aerate freely without being cooled or diluted, building a strong, velvety foam. After this dry shake, you add ice and shake again (a wet shake) to chill and properly dilute the drink while the foam remains on top.

Ice would chill and dilute the mixture during foam formation, which can weaken or collapse the foam. Lemon juice is acidic and can destabilize or coagulate the proteins, harming the foam rather than helping it. Water doesn’t foam at all; it merely dilutes the mixture. Egg white uniquely provides the protein structure needed for foaming, and the dry shake is the technique that maximizes that foam.